Bruce Schneier says in his TED talk about security: I tell people "If it's in the news, don't worry about it", 'cause by definition, news is something that almost never happends. It is a great concept, although not completely correct. The switch from one state to another may not happen very often, but you are often worried whether you are in that state or not. But overall I agree and I have to say that it is a great news filter idea: just ignore news that are not about a change in state.